1 - 20 of 40,076 Works in Sans (Undertale)
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When you decided to stay in Ebbot City, you didn’t expect your life to intertwine with monsters, let alone fall in love with them. What began as simple friendship soon unfolds into something far deeper, as familiar faces begin arriving from unfamiliar worlds.
In a home filled with secrets, laughter, and quiet heartache, you’re drawn into a web of connection that transcends timelines. But love is never simple, and in a multiverse of infinite versions, learning who to trust, and how to hold it all together—might be your greatest challenge yet.
Because sometimes, the most powerful thing you can offer… is your heart.
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A player from our world tries to get his best ending, an Underplayer fanfic.
(I saw there be exactly 3 Underplayer fics and so wrote this. Very self-indulgent.)
(If you want to read the original comic, https://archive.org/details/underplayer ) -
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“it’s just…you keep acting like something horrible is waiting for you at the bottom of this mountain.” His whispered voice was calculated and obnoxiously observant.
Frisk chewed their lip and felt their nails subconsciously start digging into their palm. The last thing they wanted to do was ruin anyone’s excitement about the surface with their own anxieties. If anything, they thought they’d been hiding their fears pretty damn well.
“There are some things, Sans…” their voice seemed to start against their will, hushed and constricted. They put a hand over their heart, which was beating restlessly.
“…that I just can’t explain to you,” Frisk finished exasperatedly.
- Language:
- English
- Words:
- 9,767
- Chapters:
- 1/?
- Hits:
- 4
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Dust and his brother, Papyrus, have created a life for themselves despite that life being on the streets. Living out there is dangerous but they’ve learned how to make it work and survive. Getting into fights is pretty common so when someone corners them they never thought it would end the way it did. They had won but at what cost?
A little more than a month later Dust finds two skeletons that need some help. Little did he know, they would soon be the ones helping him instead.
(I rewrote the summary because i suck at writing them. Hope this is decent)
Series
- Part 1 of Lighting up the dark
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The story of how it all came to begin, and the story of what happened after. Two siblings are lost in a world of which they have no prior knowledge believing wholeheartedly that each one hates the other. They form their groups and go along their chosen paths until one day, those paths cross again.
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Fanart of fics I like by Froggy_bot
Fandoms: Undertale (Video Game), Original Work, Life Series | 3rd Life SMP Series
28 Jul 2025
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This is just going to be a dumping ground for all the fandom related art I do. Some might be of fanfics, others may just be an AU of my own creation. I might do requests in the future.
Comments and kudoses are very appreciated!
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Monsterkind's Hero is a Title Soaked in Blood by gasbag64
Fandoms: Undertale, Undertale Yellow
28 Jul 2025
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After unintentionally leading Clover to their death and being given a title they despise for it, Martlet, Ceroba and Starlo vow to never let another human face Asgore unless their life is spared and to prevent a second human-monster war from breaking out. However, this is no easy task. They have to keep their plan secret from the Royal Guard and confront their guilt, weaknesses, and self-doubt. Despite everything... can they truly be heroes?
Meanwhile, a flower, opposed to both the Guard and Clover's friends, secretly tries to do his best to make sure the next human faces Asgore with as few hitches as possible in case he can't absorb their SOUL first. He doesn't feel the need to try too much. After all, if his plans fail, he can always reset... right?Series
- Part 3 of Clovers and Sevens
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Summary
my lame attempt at an anti harem fic
So what if you had a crush on Blue? What if he invited you to his party? and instead of him taking you there you meet his Edgy-looking cousin Red?
Red is right now dealing with his cousins giving him shit for things he didn't do. He has one bitch to thank for that...Tiffany
Will these two opposites be what they need? (the answer is yes) -
Underneath My Wings (You'll Be Loved) by TsunaidaMay for ScaredMee
Fandoms: Undertale (Video Game)
28 Jul 2025
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“I don’t fucking belong to you,” Killer snapped, picking up his attempts to free himself. “I belong to Nightmare.”
“You used to, yes, but you belong to me now.”
“What makes you think he’ll let you take me from him?” Killer snarled. He still served a purpose to the other, still made his existence worthwhile. Even if Nightmare didn’t care much for him, Killer had sworn his loyalty in exchange for being able to experience something new. As long as Nightmare kept up his part of the deal, so would Killer.
“Take you?” Sol asked, his smile only widening. “Why would I need to take you if he has given you so willingly?”
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Grafted Fate by Stevethebarbarian
Fandoms: Undertale (Video Game), Deltarune (Video Game)
28 Jul 2025
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ENTRY NUMBER SEVENTEEN
*Though our prior experiments were met with failure, any unexpected result provides knowledge, and this one has proven exceptional even in that regard. Though an unfortunate mishap led to King Asgore's adopted child joining me in my fall, I will not deny the spectacular nature of our new discoveries.
*The darkness is suffocating, and yet we see. There is nothing here, and yet here we are. The only way I know to express the marvelousness of this discovery is that in this profound absence of light, an entire new world stretches forth. To say that this revelation is useful is to understate its importance to a repugnant degree.
*This place is not empty. I am told by one of its residents that their royal highness and I are bound by prophecy to save not only their world, but our world in the light above. This comes as no great surprise to me. If it were not I who were to save the kingdom of monsters, then who would?
(It's an AU where instead of getting his shit scrambled, W. D. Gaster falls into a Dark World along with Chara Dreemurr. Essentially, the plot of Deltarune takes place as a canon-divergent prequel to Undertale.)
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Noelle has known Kris all her life, but recently they have been getting more and more out of their shell, especially with Susie. Finding out that her shy, awkward neighbor has been throwing many house parties while Toriel is out of town, Noelle can't help but go; mainly trying to find any way she can get closer to Susie despite her mothers wishes, and out of morbid curiosity. How would a house party at Kris's be like? After all, how big of a party could it be?
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PREGMAEDA WEEK 2025 by saikiii
Fandoms: Super Dangan Ronpa 2, Dangan Ronpa: Trigger Happy Havoc, Dangan Ronpa Series, Undertale (Video Game), House M.D., The Good Doctor (TV 2017), プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game), Yandere Simulator (Video Game), Five Nights at Freddy's, Doki Doki Literature Club! (Visual Novel), Class of '09 (Visual Novel), Hetalia (Anime & Manga), Death Note (Anime & Manga), Breaking Bad, Yandere High School - Samgladiator (Web Series), Yandere High School - ItsFunneh (Web Series), The Lorax (2012), My Little Pony Generation 4: Friendship Is Magic (Cartoon 2010), My Little Pony, Alien Stage (Web Series), 文豪ストレイドッグス | Bungou Stray Dogs, キミガシネ | Kimi ga Shine | Your Turn To Die (Visual Novel), 大逆転裁判 | Dai Gyakuten Saiban | The Great Ace Attorney Chronicles (Video Games)
28 Jul 2025
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This is a work of fiction for twitter users pregmaeda, nagito gets a shocking discovery that he is pregnant!!! What will happen next, read the story to find out
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Concept: UTY AU from the perspective of a military veteran investigating the disappearances of the eight human children last sighted near or at the base of Mt. Ebott.
After having completed her eight years of service, she goes home to find her younger sibling has disappeared. As she inevitably finds and descends the entrance to the underground, PTSD surfaces. This soldier has seen the worst of humanity, and battles the sins of her past actions.
Clover has made a sacrifice, but things end up differently than what his friends expected. Having found an amnesiac Fox monster, the Ketsukane family takes him in as their own.
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Kiss Me, Kill Me (And a Secret Third Option) by Embrace_the_Deep (DefinitelyNotABee)
Fandoms: Undertale (Video Game)
28 Jul 2025
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What had Ink tried calling him again?
Someone named Killer?
As fitting as that name would have been for the previous owner of his body, he clearly remembered that he had been referred to as 'Sans' in the blurred bits of memories.
Maybe he was being mistaken for someone else.
He hopes he never meets this actual 'Killer', but even if they were some sort of shady person- skeleton- thing, that doesn't excuse kidnapping a stranger and chaining them to the floor of your home after nearly killing them!
With the most unimpressed expression he could muster, Quill forced the aching phalanges of his right hand into a wrist-up fist, and extended his middle finger.i.e. A self-indulgent crack-treated-seriously fic featuring isekai!Killer vs. the Multiverse. Enjoy!
Series
- Part 1 of The Third Secret Option
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The forest by Alex_theawsom
Fandoms: Dandy's World (Roblox), Forsaken (Roblox), Undertale (Video Game), Slender Man Mythos, Sans AUS (Internet)
28 Jul 2025
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Series
- Part 6 of Multiverse child adventures
- Language:
- English
- Words:
- 1,727
- Chapters:
- 1/1
- Hits:
- 6
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Undertale of the Hill by Doomfan808
Fandoms: King of the Hill (Cartoon), Undertale (Video Game)
28 Jul 2025
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After a sudden rainstorm causes the Hills to hide in a cave and fall into the underground, they now have to find their way out to the surface and back to Arlen, Texas.
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This work exists to host entries relating to my project Undersided! These may be continually updated without posting new chapters, as more material is added. I'll add timestamps for each edit to a given chapter.
This work is dedicated to the public domain.
Read Undersided on the website at https://vector-graphics.github.io/undersided/ -
Your Soul and Mine, Our Souls Combined by reilio
Fandoms: Undertale (Video Game), Undertale: Red and Yellow, Undertale: Yellow
28 Jul 2025
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After suffering for too long on the surface because of a war he wants no part in, Clover jumps into the Underground with his little sibling. He had grown to hate humanity over several years, to a point where he’d rather take his chances with the monsters.
Chara flees the capital after finding out what their father intended to do to every human that fell down. Despite their best efforts, they haven’t been able to stop a single human from marching straight to their death.
Will she be able to save these siblings?
TLDR: After a fatal mistake, Chara and Clover’s souls become bonded to one another.
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After the barrier was destroyed, a man named William arrived to greet monsterkind, having been waiting his entire life for this moment. Offering his help in ensuring a smooth transition to the surface, he, along with his son Micheal, are given a tour of the underground.
Micheal didn’t have many friends, and his father insisted this would be good for him. He certainly hadn’t expected to meet a girl that he immediately knew he wanted to spend the rest of his life with.
Frisk and Chara have been through hell together. Throughout everything, they were always there for each other. Now, with Chara separated from Frisk once they move to the surface, the two are finally forced to confront what their relationship truly is.
Series
- Part 1 of The Henrikson Saga
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Summer Adventure 9 by DangerousTigerBasement
Fandoms: Dragon Quest Series, One Piece (Anime & Manga), Kirby (Video Games), Smiling Friends (Cartoon 2020), 龍が如く | Ryuu ga Gotoku | Yakuza (Video Games), Undertale (Video Game), RWBY
28 Jul 2025
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The year is 2024. Following the time travel incident that happened in 2023, a timeline has been created where a Dark Future has occurred. Four heroes will go on their own separate journeys to set right what once went wrong.
Lance, a veteran adventurer who seeks the Wish Stones to find a solution to the other timeline.
James, who must fight old enemies of his father after finding out what they did in the Dark Future during his unintentional visit there.
Nori, a Keyblade wielder from the Dark Future who traveled through time in order to set right what once went wrong.
And Luzie, a mysterious woman whose only clue to go off of is a recollection of someone else's plane trip from Alaska after an adventure has transpired there.
Series
- Part 2 of Summer Adventure
- Language:
- English
- Words:
- 993
- Chapters:
- 2/?
- Hits:
- 7